Chemistry

Problem

Four hypothetical reactions have the indicated standard free-energy changes at

298\,\text{K}

. Which reaction would be expected to have an equilibrium constant

K

closest to

1

at this temperature? (A) Reaction W:

\Delta G^\circ = +0.50\,\text{kJ mol}^{-1}

(B) Reaction X:

\Delta G^\circ = +3.0\,\text{kJ mol}^{-1}

\Delta G^\circ = -8.0\,\text{kJ mol}^{-1}

(D) Reaction Z:

\Delta G^\circ = +25\,\text{kJ mol}^{-1}

a) Reaction Y b) Reaction X c) Reaction W d) Reaction Z